4/21/2008 @ 7:45PM

In Depth: Europe's Most Congested Cities

2. Berlin, Germany

Average speed: 15 mph or 19 kph

Germany’s capital had more than 1.2 million registered cars in 2006, which meant that more than a third of its population of 3.395 million drove a vehicle. To help combat congestion, the State of Berlin, DaimlerChrysler Services and Siemens formed a public-private partnership to create VerhensManagementZentrale, a 16 million euros traffic management project started in 2001 and finished in 2003. The VMZ Web site shows live traffic information, and it also suggests the best travel routes for passengers, using a combination of real-time traffic data, travel times and public transit schedules.